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A ‘bomb cyclone’ has officially hit the US. Here’s the definition and more



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According to 9NEWS, the combination of snow and wind is going to make travel ‘extraordinarily difficult’
9NEWS, Fort Collins Coloradoan

Editor’s note: This weather story has been made free for everyone to view as a public service. To support the work of the Coloradoan, and to ensure we can keep providing this service in the future, subscribe today.

We updated this story at 10 a.m. Wednesday as atmospheric pressure shifted and today’s blizzard reached “bomb cyclone” status.

As a powerful blizzard heads to Colorado on Wednesday, people have started calling it a “bomb cyclone.” Are they right?

Yes.

A bomb cyclone is an actual meteorological phenomenon that describes a storm with plummeting atmospheric pressure. We have a bomb cyclone on our hands when pressure drops by 24 millibars in 24 hours, which has officially happened at both Denver International Airport and Northern Colorado Regional Airport.

Colorado Public Radio devoted a whole website to answering the bomb cyclone question. The station is updating the page every 5 minutes.

Low-pressure storms like this are rare in Colorado and known for creating fierce winds and intense snowfall.

Fort Collins, Loveland, Hereford and Nunn are under a blizzard warning from 10 a.m. to midnight. The National Weather Service predicts 5 to 10 inches of snow and wind gusts up to 75 mph in the warning area.

The weather service advises travels across Colorado’s mountains and eastern plains consider canceling their plans because conditions will “deteriorate quickly” late this morning or early afternoon.

Road closures, power outages and extensive tree damage are all likely today.

Northern Colorado snow closures: CSU, Poudre and Thompson school districts cancel school on Wednesday

Here’s which Fort Collins streets will be plowed first when it snows (and other snow tips)

Map: Tell us how the road conditions are in your Fort Collins neighborhood

Jacy Marmaduke covers environment and other topics for the Coloradoan. Follow her on Twitter @jacymarmaduke. Support stories like this one with a digital subscription to the Coloradoan.

 

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